Permit guide · Building Permit
How to Get a Building Permit
Building permits are the approval path your local AHJ uses to check zoning, code, documents, contractor rules, fees, and inspections before construction starts. The exact process changes by address, project type, and local amendments, so the safest first step is identifying the reviewing jurisdiction and the permit package it expects.
This guide covers
- AHJ
- Zoning
- Documents
- Fees
- Inspections
The short answer
To get a building permit, you usually identify the AHJ, confirm whether zoning review applies, prepare a site plan or construction drawings, submit the application, pay fees, answer reviewer comments, and schedule inspection steps after approval. Small repairs may be exempt, but new structures, additions, structural changes, major remodels, trade work, and occupancy changes commonly require building permits.
What a building permit application usually needs
AHJ and Project Scope
The first question is who reviews the work. A city, village, township, county, or special district may control the permit. The project scope then determines whether the package needs building, zoning, electrical, plumbing, mechanical, or other trade review.
Zoning and Setbacks
Many building permits start with zoning. Reviewers may check setbacks, lot coverage, height, easements, floodplain limits, historic districts, accessory structure rules, and whether the proposed use is allowed at the address.
Site Plan and Drawings
A site plan shows the lot, existing structures, proposed work, dimensions, distances to property lines, driveways, utilities, and other constraints. Larger projects can also need floor plans, elevations, framing details, energy forms, or engineering.
Contractor and Owner Rules
Some AHJs let homeowners pull permits for work on their own residence. Others require licensed or registered contractors, bonds, insurance certificates, notarized owner affidavits, or subcontractor lists before review can start.
Fees and Review Comments
Fees may be flat, valuation-based, square-foot based, or split across building and zoning departments. If the reviewer finds missing information, the permit pauses until corrected plans, forms, or contractor details are submitted.
Inspection Sequence
Approval is not the last step. Many projects require inspection milestones such as footing, framing, rough trades, insulation, final building, and certificate of occupancy or completion. Work that gets covered before inspection can create expensive rework.
Where People Lose Time
The slowest permit applications usually fail before submission: wrong AHJ, no zoning check, missing site plan dimensions, unregistered contractor, unclear scope, or drawings that do not match the actual project. A clean first package is often faster than a rushed application that triggers corrections.
State-specific notes
Illinois
IL
Illinois permitting is highly local. Chicago, suburbs, townships, and counties can each use different forms, contractor registration rules, zoning checks, and inspection procedures.
Explore Illinois permit rulesWisconsin
WI
Wisconsin projects can involve local permitting plus state residential code expectations. One- and two-family work may need UDC-aware review, local zoning approval, and scheduled inspections.
Explore Wisconsin permit rulesIndiana
IN
Indiana permit requirements vary by city, county, and local code adoption. Some projects trigger county-level review, local zoning review, or separate trade permits depending on scope.
Explore Indiana permit rules
Common building permit mistakes
- Starting construction before the permit is issued
- Submitting to the wrong AHJ or missing a county/township layer
- Forgetting zoning, setback, easement, or lot-coverage checks
- Uploading a site plan without dimensions or property-line distances
- Covering work before the required inspection
Start with a free permit check
Enter the address and project so Permitech can identify the permit office, check property context, and research official local sources. Review what we find before deciding whether you want help organizing or filing the permit.
What the free check does
- Step 1: Resolve the propertyMatch the address to its parcel, zoning context, and responsible permit authority.
- Step 2: Research the projectCheck building permit requirements against official local sources.
- Step 3: Review the resultSee the permit path first, then decide whether you want help organizing the package or filing it.
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Get the Building Permit Path Right Before You Submit
Our permit experts identify your AHJ, check zoning and document requirements, map the application steps, and help prepare the permit path for the specific project at your address.
Our DIY Permit Package currently covers sheds and garages. For broader building permits, our Done-For-You team handles the research and filing guidance.
For contractors
Contractors: Turn Permit Prep Into a Repeatable Workflow
Use Permitech to standardize the AHJ lookup, zoning check, document list, fee expectations, and inspection path before your team promises a start date.
Our self-serve subscription plans currently cover sheds and garages. For building permits and other project types, we work with contractors on a custom contract basis tailored to your volume and service area. Fill out the quote form and select "Contractor", and we’ll put together a plan that fits your operation.
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